In her latest film, My Sister’s Keeper, Cameron Diaz plays the mother of a girl battling leukemia. In a particularly poignant scene, her character shaves her locks in an act of solidarity with her eldest daughter. But don’t be fooled. Cammie didn’t actually pull a Britney. It was just a wig cap and some clever movie magic.

She tells Metro newspaper, “If I shaved my head and my hair was this long right now, they would have me in a lab somewhere. Kerastase or L’Oreal would have already taken me somewhere.”